Re: TIB: Checking if strings exists
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Re: TIB: Checking if strings exists
---Audun Rundberg <srundber@powertech.no> wrote:
>
>
> Is there a way to check the existence of a string on the TI-83? I
know there isn't a "CheckString" function, but is there a way to get
around this?
>
> My problem is that my program quits if a string does not exist when
I use a String3+String4->String3 to update the string.
>
> Audun Rundberg,
>
You could put a dummy string at the beginning of the program.
In the first line do something like
:" "->string1
Then to test if anything had changed to the string
:If string1==" "
:Then
:goto notchanged
:else
:goto itchanged
:end
==
Garth Johnson
Visit my website!
http://www.bigfoot.com/~garthjohnson
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